Solutions for Stainless Steel Screws in Medical Devices

Solutions for Stainless Steel Screws in Medical Devices

Stainless steel screws are stainless steel screws made of stainless steel wire pierced. For stainless steel, we generally use the letter SUS to indicate it. Stainless steel screws are usually made of stainless steel 201, stainless steel 304, stainless steel 316, stainless steel 404 and so on. Generally, we often say stainless steel screws SUS304, is that the material of this stainless steel screw is 304.

The relationship between the main chemical composition and stainless steel performance.

    1. Carbon C can increase the hardness and strength; if the content is too high, it will reduce its ductility and corrosion resistance.

    2. Chromium Cr can increase corrosion and oxidation resistance, refine the grain, and increase strength, hardness, and wear resistance.

    3. Nickel Ni can increase high-temperature strength and corrosion resistance and reduce the rate of cold work hardening.

    4. Molybdenum Mo increases strength and excellent corrosion resistance to oxides and seawater.

    5. Copper Cu is conducive to cold working molding and reduces magnetism.

Other properties of stainless steel materials

1. The above materials are non-magnetic in a normal state. 304M is slightly magnetic after cold working (1.6u-2.0u or so); 304HC is magnetic (1.01u-1.6u or so); 316 is less than 1.01u after cold working.

2. Each material has good elasticity, easy cold forming, tensile strength, and yield strength and can meet the requirements. (Ts tensile strength min700N/mm, Ys yield strength min 450N/mm)

304M, 304HC, and 316 are three kinds of material. 300 series austenitic stainless steel is one of the most widely used materials. The obvious difference between the materials is that after cold working material magnetism for 316<304HC<304M. 316 material resistance to chemical corrosion, pore corrosion resistance, and seawater corrosion resistance relative to 304M and 304HC are excellent.

In short, stainless steel screws have characteristics for corrosion resistance, beautiful, and sanitary. Still, their strength and hardness under normal circumstances are equivalent to carbon steel (6.8 level), so the stainless steel products should not be impacted knocking, pay attention to the maintenance of its surface finish and precision, and can not be used with carbon steel products as casually applying the same force, can not be applied to the force is too large, and at the same time, because of the stainless steel flexibility is good, in the use of the resulting steel chips are prone to stick in the nut at the teeth, increase sassafras, easy to lead to the nut level, and the stainless steel is a good choice for the use of the stainless steel. Increased sassafras force makes it easy to teach to lock, and using carbon steel, even if the iron chips fall, compared to stainless steel, is not easy to close.

 Stainless steel screws in the market are generally used more than stainless steel SUS201 screws and stainless steel SUS304 screws, such as SUS316 screws, cost is relatively high. So, they generally use less, but there is some increased demand for products above that is no way, so they have to use high strength. Mainly high strength stainless steel screws have better, higher performance. It has high corrosion resistance and high-temperature resistance to prevent frivolous rust. Stainless steel screws play an essential role in the field of medical equipment, widely used in surgical instruments, implants, and medical equipment connection and fixation.

1. Biocompatibility: Medical devices must have good biocompatibility to ensure compatibility and safety with human tissue. Stainless steel screws are made of high-quality stainless steel material with good biocompatibility, will not cause allergic or rejection reactions, and are suitable for medical devices in contact with the human body.

2. Corrosion resistance: medical devices often contact body fluids, chemicals, disinfectants, and other corrosive media. Stainless steel screws have excellent corrosion resistance and can resist the corrosion of these media to maintain the reliability of their connection and fixation. This is critical to the long-term reliability of implants and medical devices.

3. Strength and stability: medical devices need sufficient strength and stability to withstand the stresses and loads of surgical operations or in vivo. Stainless steel screws have high strength and endurance to resist these forces, ensuring the stability and durability of the medical device.

4. Cleaning and sterilization: Stainless steel screws have a smooth and even surface that is easy to clean and sterilize. It is less likely to accumulate dirt and bacteria and can be cleaned through routine cleaning and sterilization. This is essential for medical device hygiene and infection prevention.

5. Compliance with medical standards: The use of stainless steel screws in medical devices needs to comply with relevant medical standards and regulations, such as ISO 13485 (medical device quality management system) and FDA (U.S. Food and Drug Administration) requirements. Selecting standard-compliant stainless steel screws ensures medical device compliance and safety.

Stainless steel screws have essential applications in the medical device field. Their biocompatibility, corrosion resistance, strength, and stability are ideal for medical device attachment and fixation. By using suitable stainless steel screws, you can ensure the compatibility of medical devices with human tissue, and the stability and reliability of the device, thus improving the quality and safety of healthcare services.

Please get in touch with me if you want high-quality, Metric Stainless Steel hexagon head screws fasteners or technical support for structural design. Thanks.Email:adelajonly@gmail.com

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